Oil clarifier



' 9, 1941- w. G. BURHANS OIL CLARIFIER 5 Sheets-Sheet 1 Filed Oct. 9, 1936 Inventor A iiomgys 1941- w. G. BURHANS 2,265,471

OIL CLARIFIER Filed 001:. 9, 1936 5 Sheets-Sheet 2 A iiorn ey s Dec. 9, 1941. w. G. BURHANS 2,265,471

OIL CLARIFIER Filed Oct 9, 1936 5 Sheets-Sheet 5 Inventor A iiomeys latented Dec. 9,1941 I 4 2,265,471

UNITED STATES PATENT OFFICE H on. cmmr'nrn William G. Burhans, Kingston, N. Y.

Application October 9, 1936, Serial No. 1o4,s9e 12 claims. (01. 210-131) This invention appertams to new and useful that numeral l4 represents the cap which has a improvements in i uid c ifle s, e sa e bein depressed central portion 15 hearing against the a continua p Of y i-P pp concave-convex shaped perforated cup I5 which cation S a 7097, fi February 1935, bears against the upper hemi-spherical shaped which has now become U. S. Patent No. 2,068,263. top end of the filtering cartridge II. Th pe- The pr ncipal Obj ct of he Presen inv n i n ripheral portion of the cap I4 is provided with iStO provide novel Y-P S means for accommoa grooved flange 18 adapted to seat upon the da g the filtering ca trid es. the Subject matter upper edge of the casing 5 and suitable clamp of which" has been divided from myabove specimeans la i employed for clamping the cap l4 fied application. f in place. Another important object of the invention is The cartridge I1 is provided with a jacket 20 to provide a clarifler of the character stated inof h wir 01 similar material and a sheet volving by-pass means so that should the filter-' 2| of this material is embedded spirally in the ing means become clogged, the liquid or oil filtering mass I3. could by-pass the filtering means. An elongated tube 22 extends longitudinally h r imp r n Objects and vantages of and axially through the cartridge I1 and is prothe invention will become apparent to the reader 1 d ith perforations 23' therein. The lower of the following specification. portion 'of the tube depends into the upper flared In the drawings: end portion of the fitting generally referred to Figure 1 represents a vertical sectional view by numeral 24. Thus'it can be seen that when through one form of the'invention. oil enters through the fitting 6 it cannot get out Figure 2 is a vertical sectional view through of the lower chamber of the casing 5 and must another form of the invention. force its way up through the filtering material Figure 3 is a vertical sectional view through I3 until it is able to reach the opening 23 from the third form of the invention. which it drains into the tube 22 and from there Figure 4' is a vertical sectional view through through the fitting 24 to the outlet fitting 8. the form of cartridge shown in Figure 3 with Thus the oil is filtered. However, should the which an adjustable by-pass tube is disposed filtering material become clogged, to relieve the therethrough. 1 pressure, the by-pass fitting 24 comes into play. Figure 5 is a cross sectional of Figure 4. The oil under pressure will overcome the valve Figure 6 is a side elevational view partly in II and the oil will escape by way of the fitting section of another form of the invention show- 24 to the outlet 8. I ing the outside by-pass. Referring to the form of the invention shown Figure 7 is an enlarged'fragmentary sectional I in Figure 2, itcan be seen that reference charview on linel-l of Figure 6. s" acter 25 represents the casing which is provided Figure 8 is a fragmentary detailed sectional with the inlet fitting 26 adjacent its lower end view on line 8-8 of Figure 6. and the outlet nipple 21 adjacent its upper end.

Referring 'to the drawings wherein like nu- An upstanding. by-pass unit generally remerals designate lik parts, it can be seen in ferred to by numeral 28 is mounted within the Figure 1 that the numeral 5 represents the shell lower portion of the casing 25 and has the short having the oil inlet fitting 6 adjacent the bottom bore 29 extending downwardly from the top thereof as well as the drain plug 1 and outlet, thereof. Numeral 30 represents a cross-bore nipple 8. Outlet nipple 8 is in the form of a intersecting the bore 23 and provided with a fitting projecting upwardly into the lower porbushing 3| in one end serving as a seat for the tion of the casing and having a laterally extendvalve 32, which is urged normally against the" ing barrellprovided with a ball seat at its outer seat 3| by the sprin 33. The upper end of the end against which the internal ball II can seat. bore 29 is flared receive the lower end of A coiled compressible spring 12 urges this ball the tube 34 which extends axially through the into seated position so that as oil enters through filtering cartridge 35. This tube 34 is not prothe fitting s the oil' will first pass through the vided with openings as is the tube 22. e carfiltering material l2, but should this be clogged, tridge 35 is provided with'the jacket 36 of mesh it will pass into the by-pass fitting through the material and the embedded spirally wound sheet barrel 3 by overcoming the tension of the spring 31 of the same mater' l. Reference character l2. l6a is the perforated cup corresponding to the Again to Figure 1, it can be seen cup l6 which is urged downwardly against the the filtering material of the cartridge '35 be clogged,- the oil under pressure will overcome the valve 32 and the oil will be free to pass up the tube 34 to the top of the cartridge, from where it can pass over the perforated cup I641 to the outlet 21.

Figure 3 shows a third form of the invention wherein numeral 38 denotes the improved cartridge which self-contains the by-pass. The

' casing 25a is provided with the inlet fitting 26 for oil and is provided as in the case of the other casings of the other forms with an internal shoulder it upon which the cartridge 38 rests. This cartridge consists of the outer jacket 39 having the filtering material 40 therein and in this filtering material is the spirally wound sheet 4| of mesh material. Extending longitudinally and axially through the cartridge 38 is the tube 42 which is flanged at its lower end as at 43 to bear against the bottomof the-cartridge. A portion of the cartridge adjacent the upper end thereof is constricted as at 44 to provide a seat for the downwardly pressing ball 45, which' is urged downwardly by the corded compressible spring 46 interposed between the said ball and the neck portion 41 of the tunnel 48,

which neck portion depends into the upper portion of the tube 42.

I from there passes out through the funnel 48' and above the cup l6 from where it flows to reach the outlet 21. The clamp means for the top I4 is denoted by reference character I9.

Theform of the invention shown in Figure 4 is based on the self-contained by-pass of the type of cartridge shown in Figure 3. Aside from this by-pass tube the balance of the construction is identical with the formof the invention shown in Figure 3. This cartridge consists of the jacket 69' of mesh material having the. spirally wound sheet 4| of mesh material embedded in the illtering material 40. The by-pass structure is generally referred to by numeral 42' is longitudinally disposed through thecartridge and its only distinction over the corresponding structure shown in Figure 3 is that the elongated tube is divided into' the upper section b and the lower section 0, these sections telescoping with the lower section 0 provided with the flange 43. The upper end of the section 0 and the lower end of the section b are provided with engageable flanges d. This telescopic or sliding connection of the sections 12 and 0 permits the cartridge to be compressed longitudinally in getting the cartridge to fit snugly-in the shell 25a.

Figure 6 discloses a form of the invention which employs an outside by'-pass. In this form of the invention reference character in denotes a shell open at its top and provided with a bowlsliaped bottom portion having a drain plug 8a therein. I

Upstanding from the upper edge portion of the 2,265,471 shell 6a are the risers tau-Ila provided with hook formations lac-lab at their upper ends.

A clamp structure generally referred to by nu-' meral 55 consists or the cram bar 66 having reduced end portions engageable with the hook formations l9bl9b. A handle I is provided with the screw extension 56 which is- Ieedable through the intermediate portion of the cross either pass through the valve generally referred to by numeral 63 in the event the cartridge is clogged or else through the cartridge and the by-pass tube 64.

The cartridge is provided with the endless wire bail 65 as is also present in the cartridges of the other forms of the invention disclosed here, the bail being free at its upper end so that it can be grasped after the, cover Ma and the perforated cup 64 have been removed to facilitate extraction of the cartridge from the shell 5a.

The inverted perforated cup-shaped structure 64 of course keeps the upper end of the cartridge away from the lid I40 so that the oil which has filtered through the cartridge can pass through the fitting 65 and the pipe 64 to the T-fitting 66 where it goes to its working point.

The valve 63 which is located in the lower portion of the shell 5a consists of the barrel 61 having the valve seat 68 at its inner end and internally threaded at its opposite end to receive the threaded portion 68 of the T-fltting 66. A pawl 10 is normally urged against the seat 64 by the spring II so that oil cannot enter the fitting 66 by way of this valve 63 unless the cartridge 60 is exceptionally clogged.

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departure from the spirit and scope of the invention as claimed hereinafter.

Having described the invention what is claimed as new is 1. A clarifier of the character described comprising a casing having a removable top, a cartridge of filtering material disposed in the casing, a fluid inlet at the lower portion of the casing, an outlet at the upper portion of the casing and means in the casing for by-passing fluid entering through the inlet to the outlet in 'the event the filtering material becomes clogged, and said filtering material being in the form of a, cartridge provided with a spirally wound sheet of mesh material embedded therein.

2. A clarifier comprising a casing, a yieldable cartridge of filtering. material in the casing, a fluid inlet at the lower portion of the casing, a tube extending longitudinally through the cartridge and having a check valve therein, said casing being provided with an outlet adjacent its upper end, said tube being divided into apair of telescoping sections.

3. A cartridge for filters comprising abody of filtering material, a bail-like structure extending along the sides of the body andover the top thereof, said body being provided with a depression in the top portion thereof over which the upper portion of the bail-like structure extends to define a hand grip portion, the lower portions of the bail being disposed inwardly through the lower portion of the body and downwardly to pass across the bottom of the body.

. 4. A filtering cartridge of the character stated comprising a body of filtering material of yieldable consistency, a by-pass, tube extending longitudinally through the body and being divided into a pair of extensible sections, the outer ends of the sections being flanged outwardly to bear against the ends of the body.

5. A filtering cartridge of the character described comprising a body of filtering material having a by-pass tube extending longitudinally therethrough, a portion of the tube at an interi mediate point being constricted to define a valve seat and a spring-pressed ball valve in the tube engaged with the seat, said constricted portion being located adjacent one end of the tube, a

tubular member having a laterally disposed fiange for abutting one end of the filtering body, said tubular member being disposed into the end of the tube adjacent the constricted portion, said spring projected ball valve including a compressible coiled spring interposed between the ball and the inner end of the tubular member.

6. A filter cartridge comprising asheet of wire mesh arranged in a spiral with its convolutions spaced from each other, porous filtering material located between said convolutions, and a cover for the mesh and said porous filtering material, said cover comprising a, fabric bag providing, under the expanding action of the wire mesh and porous filtering material therein, a substantially cylindrical bounding surface for the filter, and a disc-shaped substantially fiat pervious bottom for the cartridge secured to the edges of the cylindrical bounding surface provided by said bag.

the filter, and a disc-shaped fabric bottom for the cartridge secured to the edges of the cylindrical bounding surface provided by said bag and stretched thereby into condition.

8. A filter cartridge comprising a sheet of wire a substantially fiat mesh arranged in a spiral with its convolutions spaced from each other, porous filteringv material located between said convolutions, and a cover for the mesh and said porous filtering material, said cover comprising a fabric'bag providing, under the expanding action of the wire mesh and porous filtering material therein, a substantially cylindrical bounding surface for the filter, the cylindrical surface extending in the direction of the axis of said spiral.

9. A filter cartridge comprising a sheet of wire mesh arranged in a spiral with its convolutions spaced from each other, porous filtering material located between said convolutions, and a cover for the mesh and said porous filtering material, said cover comprising a fabric bag providing, under the expanding action of the wire mesh and porous filtering material therein, a substantially cylindrical bounding surface for the filter, the cylindrical surface extending in the direction of the axis of said spiral, and a pervious ing material located between said convolutions,v

and a cover for the mesh and said porous filtering material, said cover comprising a fabric bag providing, under the expanding action of the wire mesh and porous filtering material therein, a substantially cylindrical bounding surface for the filter, the cylindrical surface extending in the direction of the axis'of said spiral, and a per- ,vious bottom for the cartridge closing the cylindrical cover provided by said bag.

11. A filter cartridge comprising porous filtering material, and a cover for said filtering material, said' cover comprising a fabric bag providing, under the expanding action of thefiltering material therein, a substantially cylindrical bounding surface for the filter, and a tubular member extending through the filtering material along the axis of said cylindrical bounding surface and connected to said cover at its ends which terminate adjacent the upper and lower ends of the cartridge, so that the tube forms a part of the cartridge and is removable from and insertible into a casing therewith.

12. A filter cartridge comprising porous -filtering material, and a cover for said filtering material, said cover comprising a fabric bag providing, under the expanding action of the filtering material therein, a substantially cylindrical bounding surface for the filter, a tubular member extending through the filtering material along the axis of said cylindrical bounding surface and connected to said cover at its ends which terminate adjacent the upper and lower ends of the cartridge, so that the tube forms a part of the cartridge and is removable from and insertible into a casing therewith, and a check valve in said tube.

' WILLIAM G. BURHANS. 

